The father of an American woman who was killed in the November 2015 Paris attacks is suing Google, Facebook and Twitter, claiming the social media giants provided “material support” to Islamic State (IS, previously ISIS/ISIL).

Reynaldo Gonzalez, whose daughter Nohemi was among the 130 victims of the horrifying Paris attacks, filed a lawsuit in the US District Court in the Northern District of California on Tuesday.

The claim is based on the premise that Google, Facebook and Twitter “knowingly permitted” IS to raise money, recruit members and publish its “extremist propaganda” on their websites.

Twitter also cited its policy: “Teams around the world actively investigating reports of rule violations, identifying violating conduct, and working with law enforcement entities when appropriate.”

However, a lawyer from Gonzalez’s legal team, Ari Kresch, told AP that the social media companies are being sued for the kind of behavior they allowed and not what was necessary published via their services.

“This complaint is not about what ISIS’s messages say,” he said. “It is about Google, Twitter and Facebook allowing ISIS to use their social media networks for recruitment and operations.”

The lawsuit also implies that Google’s ads ran along with IS videos on YouTube, which could mean that Google shared revenue with Islamic State.